The 1913 is a barretter or current stabiliser from Philips. The current of two Amps indicates that this was designed to stabilise heaters or similar low voltage devices.
The iron wire will be in a hydrogen atmosphere. The single strand is looped around the three hooks.
The wide glass tube envelope is 38 mm in diameter, and including the ES base is 118 mm tall.
Absolute Maximum Operating Conditions¶
Updated April 17, 2019.